研究了聚碳硅烷(PCS)纤维γ-ray辐射交联的不熔化效果,利用IR、TG分析了交联机理.结果表明,PCS纤维在空气、N2、He气氛下辐射13.8 MGy时均已实现不熔化,三者中以空气气氛下交联程度最高,N2、He气氛下辐照的PCS纤维的氧含量较低.在N2、He气氛下,Si-H及部分Si-CH3辐照产生自由基交联,形成了Si-CH2-Si的桥联结构;而在空气气氛下,氧参与交联还形成了Si-O-Si的桥连结构.
参考文献
[1] | Schwarz M M.Composite Materials Handbook[M].Mcgrow-Hill,1984:273. |
[2] | Yajima S;Hayashi J;Omori M.[J].Chemistry Letters,1975(09):931. |
[3] | Jaskowiak M H;Dicarlo J A et al.[J].Journal of the American Ceramic Society,1989,72(01):192. |
[4] | 冯春祥;宋永才 .[J].材料导报,1994,8(03):67. |
[5] | Okamura K;Matsukawa T;Hasegawa Y .[J].Journal of Materials Science Letters,1985,13(04):55. |
[6] | Seguchi T;Okamure k;Nishi T .[P].JP:03 220 318,1991. |
[7] | Hasegawa Y;Okamura K .[J].Journal of Materials Science,1983,18:3633. |
[8] | 王军,冯春祥,宋永才.聚碳硅烷纤维的空气不熔化处理[J].化学学报,1998(01):77-80. |
[9] | Yajima S;Okamura K;Hayashi J et al.[J].Journal of the American Ceramic Society,1976,59(01):7. |
[10] | Sugimoto M.;Okamura K.;Seguchi T.;Shimoo T. .REACTION MECHANISMS OF SILICON CARBIDE FIBER SYNTHESIS BY HEAT TREATMENT OF POLYCARBOSILANE FIBERS CURED BY RADIATION .1. EVOLVED GAS ANALYSIS[J].Journal of the American Ceramic Society,1995(4):1013-1017. |
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